android 动画

tween

xml 代码如下：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">



<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:duration="5000"/>

<rotate
android:duration="5000"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="90" />

<scale
android:fromXScale="1.4"
android:toXScale="0.0"
android:fromYScale="0.6"
android:toYScale="0.0"
android:pivotX="50%"
android:pivotY="50%"
android:duration="5000" />

/**

*
* 1 propertyAnimation
*
* 2 viewAnimation
*
* 2.1tween animation
*
* 常用的几种动画有：
*
* alpha透明动画效果
*
* android:fromAlpha
*
* Float. Starting opacity offset, where 0.0 is transparent and 1.0 is opaque.
*
* android:toAlpha
*
* Float. Ending opacity offset, where 0.0 is transparent and 1.0 is opaque.
*
* scale缩放动画效果
*
* translate平移动画效果
*
* rotate旋转动画效果
*/

@SuppressWarnings("unused")
private void tweenAnim() {

// 方式一： xml方式定义，放在res/anim/xxx.xml
// Animation animation = AnimationUtils.loadAnimation(this, R.anim.alpha);
// img_main.startAnimation(animation);
Animation animation = AnimationUtils.loadAnimation(this, R.anim.hyperspace_jump);
img_main.startAnimation(animation);
// 方式二：代码实现
// Animation alphaAnimation = new AlphaAnimation(0.0f, 1.0f);
// img_main.startAnimation(alphaAnimation);

// 其他效果同上
}

frame

<?xml version="1.0" encoding="utf-8"?><animation-list xmlns:android="http://schemas.android.com/apk/res/android"    android:oneshot="false">    <item android:drawable="@drawable/rocket_thrust1" android:duration="200" />    <item android:drawable="@drawable/rocket_thrust2" android:duration="200" />    <item android:drawable="@drawable/rocket_thrust3" android:duration="200" /></animation-list>

ImageView rocketImage = (ImageView) findViewById(R.id.rocket_image);rocketImage.setBackgroundResource(R.drawable.rocket_thrust);rocketAnimation = (AnimationDrawable) rocketImage.getBackground();rocketAnimation.start();

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